Growing up in Minnesota
My Grandfather would put his fish house out
on Mille Lacs lake every winter.
Positioned atop the ice/snow... -20* at night, propane tank placed outside.
Slept in it many a night on the big frozen lake.
Erie to listen to the ice contract/expand throughout the night.
But I lived to tell about it.
Always stayed warm enough, propane always worked fine in the cold.
But a higher elevation may be a different story for propane use.
As I might believe that could be more problematic
during sub zero temperatures.
Even with the propane heater going inside...
ya needed sleep off/above the fish house's floor.
As the lake's ice and fish house floor was purdy damn cold.
To keep the heat in...
We would occasionally cover the fish holes with plywood
to retain the heat better inside the fish house.
An decent sleeping bag kept ya warm enough.
Better be quality if the propane were to go out tho' :yikes:
It was so cold overnite...
that the ice fishing holes would need be re-chiseled open
in just a few hours ! !
and they'd net an even thicker ice layer if ya waited 'til morning
So the solution to saying warm is having a heated floor.
Not really possible (smart) atop a lake's huge ice block.
As the fish house could freeze into placed and be near impossible to move
in one piece before the spring's thaw
So to keep warm we slept on top of couches to keep us off the floor.
Yep it was a fairly large fish house with 6ft couches at both ends.
But we could fish and sleep all night long...
Well... if ya chiseled open the fishing hole(s) throughout the night anyways
Solution to keeping a mobile trailer floor warm...
Would be constructing a double wall floor
with heat ducted thru that space/void.
An alternative if ya can't and gotta sleep on the floor
Would be laying atop an electric heating blanket.
If yer the rough/tumble outdoorsy type...
maybe a thinsilate pad under yer sleeping bag could suffice ?
I spent one cold night in my RTT atop my M100
the ambient air outdoors was only 25*
We used a space heater inside and condensation was bad.
Needless to say... I won't attempt that again.
At least not with the sleeping bags I own.
Hey those Mnt. Everest climber dorks deal with sub-zero ******** in a little tent.
So how could it be any worse sleeping in a heated tear drop trailer ? Lol
pooseys